Invalidity dossier
US 7233802
Interconnect system and method for multiple protocol short message services
Current assignee: Sierra Wireless America Inc
Added 9/23/2026, 7:02:05 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 7,233,802 B2
Title: "Interconnect system and method for multiple protocol short message services"
Patent number / application: US 7,233,802 B2; application US 10/952,710.
Inventors: Edward I. Comer and Jere Sandidge.
Assignee: Original assignee Cellemetry LLC; the listed current assignee is Sierra Wireless America Inc (Google notes assignee listings may be inaccurate and are not a legal conclusion).
Dates: Priority date 1999-10-29; filed 2004-09-29; published as US20050101317A1 on 2005-05-12; granted 2007-06-19. Status: Expired – Fee Related, adjusted expiration 2021-01-11.
Purpose (from the text): To interconnect digital cellular systems of multiple formats so a customer central location (CCL) can send short messages to, or receive them from, multiple remote locations using different digital cellular or PCS standards. The patent notes that SMSCs generally support only the protocol of the system they are installed in (e.g., TDMA-only or GSM-only), while radio technologies differ at the RF layer yet are often compatible at the inter-system SS7 transport layer.
Plain-language scope: A short message arbitrator (SMA) intercepts communications between the CCL and remote locations, retrieves identifying information (such as the MIN, MSC identifier, or other identifying characteristic), and searches a database to determine the sender's data format and the format the recipient expects, along with the serving MSC, wireless access method, class of service, and transport type. If conversion is needed, the SMA converts the message and sends it over the appropriate transmission path; the described operation is bi-directional. Routing may use a data circuit to an SS7/IS41 network and then to the intended MSC.
Classifications: H04W4/14 (SMS/USSD) and H04W4/18 (information format or content conversion).
Source: https://patents.google.com/patent/US7233802/en
What the excerpt does not establish: It does not provide the full claims, complete figures (FIGS. 2–4 are named but not fully shown), the entirety of the description, or the specific contents of the database. It does not establish validity, enforceability, litigation, or the accuracy of any ownership/assignment listing. It should not be treated as a legal conclusion.
Generated 10/1/2026, 9:42:21 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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